This is one more of the "Christmas romance" genre films (I read there were 74 new ones made in 2020; they are cheap to make and very popular). There is no deviation from the formula: cute girl (make that EXTREMELY cute girl) wanders into a new relationship with a Handsome (rich) man who is looking for love, and there are obstacles, but ... guess how it ends? (I am not holding my breath).
Despite a snarky comment by another reviewer about Emma Rigby's lips being bought, she has always looked this way and yes, many men do like full lips. Not sure why, I guess it's biological. Anyway, Emma is a really likeable actress in a likeable film.
Don't stress out over the plot ... it's a pleasant way to spend a couple hours.